diff --git a/tensorflow_graphics/notebooks/reflectance.ipynb b/tensorflow_graphics/notebooks/reflectance.ipynb
index 96d814deb..f582d4fc1 100644
--- a/tensorflow_graphics/notebooks/reflectance.ipynb
+++ b/tensorflow_graphics/notebooks/reflectance.ipynb
@@ -236,7 +236,6 @@
         "irradiance = light_intensity / (4 * m.pi *\n",
         "                                light_to_surface_distance_squared) * cosine_term\n",
         "# Rendering equation\n",
-        "zeros = tf.zeros(intersection_3d.shape)\n",
         "radiance = brdf_composite * irradiance\n",
         "radiance_lambertian = brdf_lambertian * irradiance\n",
         "radiance_phong = brdf_phong * irradiance\n",